The wacky creation of Austrian artist Friedensreich Hundertwasser (1928–2000), who once called the straight line 'godless', this market hall bears his indelible hallmark with its wonky walls, rainbow-bright colours …
Out on the lake is the 1920s Badhütte, attached to land by a little covered bridge. It's a pleasant place for a refreshing dip in the water and a drink.
Rorschach's main drag, Hauptstrasse, sports some fine oriel windows, particularly at numbers 33 and 31 and in the town hall, number 29.
Lodged in Rorschach's imposing 18th-century Kornhaus (granary), this museum turns the spotlight on science, technology, industry and local history with its array of hands-on exhibits.